cuneiform or egyptian hieroglyphs of ancient civilization carved on dark stone wall. undeciphered signs like sumerian and

cuneiform hieroglyph puzzle mystery old sumerian babylonian egyptian script sign ancient mesopotamia writing antiquity artifact background babylon carved civilization cryptography east egypt encryption history historical inscription letter middle science stone sumer symbol text texture wall wallpaper archaeology archeological damage undeciphered encrypted treasure system cipher secret pattern vintage riddle dark hieroglyphs wall signs like writing concept riddle generative